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The investigators are examining what types of psychotherapy are most helpful for patients as they undergo weight restoration treatment for anorexia nervosa. In this study, patients who are receiving care on our inpatient unit will also receive 4 weeks of one two types of psychotherapy: Supportive Psychotherapy or Regulation Emotions and Changing Habits.

Patients will be receiving specialized inpatient treatment for anorexia nervosa on the Eating Disorders Unit at the New York State Psychiatric Institute, where care is provided free of charge.

Study procedures will begin after one week of acclimating to the inpatient unit. Patients will be randomly assigned to receive either Supportive Psychotherapy (focused on the transition to the inpatient unit) or REACH (focused on changing routines or habits that have become part of the eating disorder). Each treatment consists of 12-sessions, delivered 2-3 times per week.

Before and after treatment, patients will be asked to participate in interviews, questionnaires, and a lunch meal.

REACH is a 12-session intervention, delivered 2-3 times per week for 45 minutes. The treatment focuses on identifying and changing behaviors and routines that have become entrenched and help perpetuate the illness.

Behavioral: Inpatient Behavioral Treatment

Inpatient treatment at the NYSPI is a behaviorally-based treatment program for anorexia nervosa. This is a non-research, clinical intervention for individuals with anorexia nervosa.

Active Comparator: Supportive Psychotherapy

Psychotherapy

Behavioral: Supportive Psychotherapy

The Supportive Psychotherapy is based on the Specialist Supportive Care (McIntosh et al, 2005), and modified for the current research procedures. Supportive Psychotherapy is a 12-session intervention, delivered 2-3 times per week as 45 minute sessions, focusing on symptoms of anorexia nervosa during the transition to the inpatient unit.

Behavioral: Inpatient Behavioral Treatment

Inpatient treatment at the NYSPI is a behaviorally-based treatment program for anorexia nervosa. This is a non-research, clinical intervention for individuals with anorexia nervosa.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.